Development of herbicide resistance in loose silky-bent grass (Apera spica-venti) in Bavaria

Abstract

Loose silky-bent grass (Apera spica-venti) is one of the most important grass weeds in Bavaria. Effective chemical weed control is essential to prevent loss of yield and harvest quality in winter cereals. Crop rotations with more winter cereals and reduced soil cultivation caused a higher infestation of loose silky-bent in arable farming regions. Effects of herbicide resistance were observed since the last 15 years. Herbicide resistance of loose silky-bent is well observed by the official plant protection service of Bavaria. A wide experience of resistance tests shows the development of resistant loose silky-bent grass and provides an opportunity for future prospects in resistance dynamics.

Keywords

• biotest
• cross-resistance
• grass weed control
• herbicide resistance management